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Visual search is postponed during the period of the AB: An event-related potential study.
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- Author(s): Lagroix, Hayley E. P.; Grubert, Anna; Spalek, Thomas M.; Di Lollo, Vincent; Eimer, Martin
- Source:
Psychophysiology; Aug2015, Vol. 52 Issue 8, p1031-1038, 8p, 1 Diagram, 1 Chart, 3 Graphs- Subject Terms:
- Source:
- Additional Information
- Abstract: In the phenomenon known as the attentional blink (AB), perception of the second of two rapidly sequential targets (T2) is impaired when presented shortly after the first (T1). Studies in which T2 consisted of a pop-out search array provided evidence suggesting that visual search is postponed during the AB. In the present work, we used behavioral and electrophysiological measures to test this postponement hypothesis. The behavioral measure was reaction time (RT) to T2; the electrophysiological measure was the onset latency of an ERP index of attentional selection, known as the N2pc. Consistent with the postponement hypothesis, both measures were delayed during the AB. The delay in N2pc was substantially shorter than that in RT, pointing to multiple sources of delay in the chain of processing events, as distinct from the single source postulated in current theories of the AB. Finally, the finding that the N2pc was delayed during the AB strongly suggests that attention is involved in the processing of pop-out search arrays. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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